[PATCH 1/3] Always run Grow_continue() for started array.

So far there were 2 reshape continuation cases:
1. array is started /e.g. reshape was already invoked during initrd
start-up stage using "--freeze-reshape" option/
2. array is not started yet /"normal" assembling array under reshape case/

This patch narrows continuation cases in to single one. To do this
array should be started /set readonly in to array_state/ before calling
Grow_continue() function.

Signed-off-by: Adam Kwolek
---

Assemble.c | 17 +++++++++++++----
Grow.c | 43 +++++++++++++++++++------------------------
2 files changed, 32 insertions(+), 28 deletions(-)

diff --git a/Assemble.c b/Assemble.c
index 4511f4d..0d3730b 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -1343,10 +1343,14 @@ int Assemble(struct supertype *st, char *mddev,
int rv;
#ifndef MDASSEMBLE
if (content->reshape_active &&
- content->delta_disks <= 0)
- rv = Grow_continue(mdfd, st, content,
- backup_file, freeze_reshape);
- else
+ content->delta_disks <= 0) {
+ rv = sysfs_set_str(content, NULL,
+ "array_state", "readonly");
+ if (rv == 0)
+ rv = Grow_continue(mdfd, st, content,
+ backup_file,
+ freeze_reshape);
+ } else
#endif
rv = ioctl(mdfd, RUN_ARRAY, NULL);
if (rv == 0) {
@@ -1561,6 +1565,11 @@ int assemble_container_content(struct supertype *st, int mdfd,
spare, backup_file, verbose) == 1)
return 1;

+ err = sysfs_set_str(content, NULL,
+ "array_state", "readonly");
+ if (err)
+ return 1;
+
err = Grow_continue(mdfd, st, content, backup_file,
freeze_reshape);
} else switch(content->array.level) {
diff --git a/Grow.c b/Grow.c
index 0b58d5e..076375a 100644
--- a/Grow.c
+++ b/Grow.c
@@ -3797,33 +3797,28 @@ Grow_continue_command_exit:
int Grow_continue(int mdfd, struct supertype *st, struct mdinfo *info,
char *backup_file, int freeze_reshape)
{
- char buf[40];
- char *container = NULL;
- int err;
+ int ret_val = 2;
+
+ if (!info->reshape_active)
+ return ret_val;

- err = sysfs_set_str(info, NULL, "array_state", "readonly");
- if (err)
- return err;
if (st->ss->external) {
- fmt_devname(buf, st->container_dev);
- container = buf;
+ char container[40];
+ int cfd = open_dev(st->container_dev);

- if (!mdmon_running(st->container_dev))
- start_mdmon(st->container_dev);
- ping_monitor_by_id(st->container_dev);
+ if (cfd < 0)
+ return 1;

+ fmt_devname(container, st->container_dev);
+ st->ss->load_container(st, cfd, container);
+ close(cfd);
+ ret_val = reshape_container(container, NULL,
+ st, info, 0, backup_file,
+ 0, 1, freeze_reshape);
+ } else
+ ret_val = reshape_array(NULL, mdfd, "array", st, info, 1,
+ NULL, backup_file, 0, 0, 1,
+ freeze_reshape);

- if (info->reshape_active == 2) {
- int cfd = open_dev(st->container_dev);
- if (cfd < 0)
- return 1;
- st->ss->load_container(st, cfd, container);
- close(cfd);
- return reshape_container(container, NULL,
- st, info, 0, backup_file,
- 0, 1, freeze_reshape);
- }
- }
- return reshape_array(container, mdfd, "array", st, info, 1,
- NULL, backup_file, 0, 0, 1, freeze_reshape);
+ return ret_val;
}

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